Humidifying apparatus



Feb. 9, 1932. F. A. ANETSBERGER ET AL 1,844,235

HUMIDIFYING APPARATUS Filed Aug. 18, 1950 inventors EZZZIMJQWZSbZIyG/T "17w Per Patented Feb. 9, 1932 UNITED STATES FRANK A. .ANETSBERGER AND WILLIAM ETSBERGER, OF CHICAGO, ILLINOIS HUMIDIFYINGM APPARATUS Application filed August 18,1930. Serial No. 476,050.

This invention relates to improvements in humidifying apparatus.

The principal object of the invention is to provide humidifying apparatus having a gas burner which can be so adjusted that the flame can be disposed readily in different positions for varying the application of heat without necessarily decreasing the heat output of the burner.

The invention is particularly adapted for use in conjunction with bakers proof boxes in which bread or other dough is placed for raising. It is desirable to maintain certain conditions of humidity and temperature in the proof boxes and the adjustable burner renders convenient the control of such conditions.

It will be understood, however, that the invention is not necessarily limited to use in conjunction with proof box humidifiers.

Another more specific object of the invention is to provide a burner which is adjustable longitudinally by means of telescopic members.

Other objects relate to various features of construction and arrangement of parts which will be apparent from a consideration of the following specification and accompanying drawings, wherein Fig. 1 is a side elevation of a proof box humidifier, partly in section, embodying the present improvements;

Fig. 2 is a top plan view thereof; and

Fig. 3 is a broken end elevation.

In the drawings, indicates the floor of a proof box which may be such as are used in bakeries into which trucks of bread and other dough are placed for proofing. Mounted on the floor is a base 11 which may be made of sheet metal. This base preferably has a flat top 12 and depending sides 13, the lower edges of which are bent at a suitable angle to render the base more rigid. Secured to the base 11 is a humidifier casing 14, preferably of sheet metal, which is supported by legs 15 a suitable distance above the base 11 and having an opening in its top in which is inserted a water tank 16 having a depression or well 17 in one end, as shown, in which is positioned a ball 18 of a float valve mecha- Fig. 1.

nismtnot shown) for automatically controlling the level of the water in the tank. The tank 16 has a flanged perimeter 19 which supports the tank within the opening in the casing. A sheet metal partition 20 extends transversely of the casing 14, dividing it into two compartments 14a and 14?), as shown in In the right hand compartment is the tank 16and from the left. compartment the flue 21 extends to a point outside the proof box. 1

Any suitable heating apparatus maybe used with the structure above described but a gas burner is preferred. The gas burner illustrated herein comprises a section22 of air mixer 22a of conventional form. Gasis T conveyed to the mixer by a conduit 24 provided with a valve 25.

The right hand end of the pipe 22 slidably fits into a second pipe 26 which passes through openings in the left hand end wall of the casing 14 and partition 20. The free end of pipe 26 is closed, as by a cap 27. The portion of the pipe 26 which extends into thecompartment 14w when in the position shown in Fig. 1 is provided with gas outlet openings or ports 28. The gas flame will thus heat the water in the tank 16 for humidifying purposes.

- When it is desired to provide dry heat to the proof box only, the burner secti0n'26 can be moved to the left upon pipe 22 until the ports 28 are disposed in chamber 146. The products of combustion pass'from the casing 14 through flue 21,- the portion 20 havingan opening 20a therein to permit the passage of the gases from compartment 1% when the burner is in the latter compartment. To render convenient the adjustment of the burner and to prevent the rotation of section 26 upon section 22, a handle 29 is provided which, in the form shown, performs both functions. The handle is formed of a metal strap which has an upwardly extending loop 29a and a portion 29?) which extends around a bar 30, as shown in Fig. 3,

in which figure the bracket 23 is shown broken away to disclose the relation of the handle 29 with reference to the burner 26 and the guide bar 30. Both ends of the strap are welded to the burner 26. The loop 29a can be grasped readily for adjusting the burner longitudinally on the pipe 22. Thus the burner while. in the extended position shown in Fig. 1 will provide the maximum humidifying effect when the gas is fully on. WVhen in the opposite position, that is, in compartment 146, the burner provides the maximum dry heat. It may be placed in an intermediate position if desiredto provide maximum heat but with a limited humidifying eifect. When the burner is at the extreme left hand position, the partition 20 shields the tank 16from the flame. The flow of gas is regulated by the valve 25. The bar 30 may be secured at one end to. the bracket 23 and at the other end to the casing 14.

A pilot light is generally employed in com- I mercial installations of the present apparatus for lighting the burner, but it is not shown herein.

Although we have shown and described the preferred embodiment of the present improvements, we do not wish to be restricted specifically thereto except as so limited by the appended claims.

.We claim: 7

1.. A gas burner comprising a stationary pipe having an air mixer at one end and being open at the other end, a second pipe slidable telescopically, thereon, said second pipe being closed at its forward end and being provided with gas outlet ports, andmeans comprising a stationary guide for preventing rotation of said slidable pipe relatively to said stationary pipe.

2. A gas burner comprising a stationary pipe, a second pipe slidable telescopically thereon, said second pipe being closed at its forward end and being provided with gas outlet ports, a stationary guide, and a handle membercarried' by said second pipe for adjusting the same on said stationary pipe and co-operating with said guide for preventing rotation of said slidable tively to said stationary pipe.

In testimony whereof, we have subscribed our names.

FRANK A. ANETSBERGER. WVILLIAM ANETSBERGER.

pipe rela- 

